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A Three Switching State Boost Converter Mixed with
Magnetic Coupling and Voltage Multiplier Techniques for
High Gain Conversion
Abstract:
An asymmetrical three state switching boost (TSSB) converter
combining the benefits of magnetic coupling and voltage
multiplier techniques is presented in this paper. The derivation
procedure for the proposed topology is depicted. The new
converter can achieve very high voltage gain and very low
voltage stress on the power devices without high turn ratio and
extreme duty cycles. Thus, the low voltage rated MOSFETs
with low resistance rDS(ON) can be selected to reduce the
switching losses and cost. Moreover, the usage of voltage
multiplier technique not only raises the voltage gain but also
offers lossless passive clamp performance, so the voltage spikes
across the main switches are alleviated and the leakage-inductor
energy of the coupled-inductors can be recycled; Also, the
interleaved structure is employed in the input side, which not
only reduces the current stress through each power switch, but
also constrains the input current ripple. In addition, the reverserecovery problem of the diodes is alleviated, and the efficiency
can be further improved. The operating principles and the
steady-state analysis of the presented converter are discussed in
detail. Finally, a prototype circuit with 400W nominal rating is
implemented in the laboratory to verify the performance of the
proposed converter.
Existing System:
 The high step-up voltage gain dc-dc converters are mainly
used as an interface between the available low voltage
sources and the output loads which are operated at much
higher voltage.
 The high step-up dc-dc converters can be non-isolated but
they should be operated at high efficiency while taking
high currents from low-voltage dc sources at their inputs.
Proposed system:
 The proposed system presents a novel high step up
interleaved-input boost converter mixed with magnetic
coupling and voltage multiplier techniques based on threestate switching.
 To achieve low input current ripples, an interleaved boost
can be used among many transformer-less converters in
high power application.
 It gives the derived topology which integrates switched
capacitors into the conventional interleaved boost
converter.
Circuit diagram:
Advantages:
 It can provide the advantages of partially input current
ripple cancellation, doubling the switching frequency and
reducing passive component size.
 The input current is continuous with low ripple; the voltage
stress across the switches is limited to half of the output
voltage for the configuration with just one multiplier stage,
and naturally clamped by one output filter capacitor.
Application:
High intensity discharge lamp (HID) for Auto-motives, DC
back-up energy systems for uninterruptible power supplies
(UPS), fuel-cell energy-conversion systems, photovoltaic
generation systems, telecom back-up facilities, electric vehicles
(EV), and fuel cell vehicles (FCV).
Reference:
[1] C Cecati, F Ciancetta, and P Siano, “A multilevel inverter for
photovoltaic systems with fuzzy logic control,” IEEE Trans. Ind.
Electron.,vol.57,no.12,pp.4115–4125,Dec.2010.
[2] C. L. Chen, Y. Wang, J. S. Lai, Y. S. Lee, and D. Martin,
“Design of parallel inverters for smooth mode transfer microgrid
applications, ” IEEETrans.PowerElectron.,vol.25,no.1,pp.6–
15,Jan.2010.
[3] Liang Yan, Brad Lehman, “An integrated magnetic isolated
two-inductor boost converter: analysis, design and
experimentation,”
IEEETrans.PowerElectron.,vol.20,no.2,pp.332–342,Mar.2005.
[4] Y. Xiong, X. Cheng, Z. J. Shen, C. Mi, H. Wu, and V. K.
Garg, “Prognostic and warning system for power-electronic
modules in electric, hybrid electric, and fuel-cell vehicles,”
IEEE Trans. Ind. Electron.,vol.55,no.6,pp.2268–2276,Jun.2008.